Malhonnête.
ETYM Old Eng. bass, French bas, low, from Late Lat. bassus thick, fat, short, humble; cf. Latin Bassus, a proper name, and w. bas shallow. Related to Bass a part in music.
(Homonym: bass).
1. Debased; not genuine.
2. Not adhering to ethical or moral principles; SYN. dishonorable, dishonourable, immoral, unethical.
3. Of low birth or station ('base' is archaic in this sense); SYN. baseborn, humble, lowly.
4. Having or showing a meanspirited lack of honor or morality; SYN. mean, meanspirited.
5. (Used of metals) Consisting of or alloyed with inferior metal.
6. (Archaic) Illegitimate; SYN. baseborn.
(Homonym: vial, viol).
Mean and degenerate; evil.